Redhat 5.4 problem

when i mapping logical volume from ibm DS4700 with size 10 GB to server redhat 5.4 the LVM does not see the full capacity of the new volume but appear with capacity lower than the actual such as 10GB appear 9GB. any one have idea....

lvmdump is a tool to dump various information concerning LVM2. By default,
it creates a tarball suitable for submission along with a problem
report.

The content of the tarball is as follows:
- dmsetup info
- table of currently running processes
- recent entries from /var/log/messages (containing system messages)
- complete lvm configuration and cache
- list of device nodes present under /dev
- if enabled with -m, metadata dump will be also included

thank for your help but know i need some help in how can make the redhat os detect the new size of the sdc......( i am mapped volume 5 GB from the storage system to my server at now all things OK and this volume appear at the lvm but at i try to expand this volume from storage to become 6GB the lvm still see it 5 GB and after restart lvm see it 6GB OK.. there is no idea or any way to detect the extended space on this volume by lvm with out restart >>>>>

Are you growing the Logical Volume by adding space to the Volume Group and then extending the Logical Volume or are you adding space to the existing Storage LUN and expecting Red Hat LVM to know that the new space is there?

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